444 DAVID'S BEAR All Bears are largely vegetarian and insect feeders; but this Bear is especially so. It delights in the nests of Termites, and its energy in destroying these hills for the sake of their inhabitants Is so great that the name of " sloth" appeared to Sir Samuel Baker to be an entire misnomer. Aeluropus, a rare Carnivore with but one species, ^A. melano- leucus, is not inferior in size to the Brown Bear, and is dis- tinguished by its largely white coloration. It was discovered in the mountains of East Thibet by Pere David, and described by Milne-Edwards1 as a distinct and new genus, the discoverer himself having named it as a species of Ursus. It is a vegetable- FIG. 226.—AeZiwojnts melanolewyus. feeding creature and bulky in form, with a rudimentary tail and a short broad head; in fact, more like a Bear than a Procyonid (with which group it is placed by some). The width of the head, however, is greater than in any other Carnivore; it is most closely approached in this by Aelurus and by Hyaena. The molar formula is Pin ^ M ^% The soles are hairy. There is no alisphenoid canal. The molars are especially large and miilticuspid, Fossil Ursidae.—The genus Ursus itself goes back to Plio- cene times. The well-known Cave Bear, Ursus spelaeus of 1 lfou>o. Arch. Mus. vii. 1872, Bull, p. 92 j and JRcchercTies pour sermr & Vhistoire natwrelTe des Ma-mmijtores, 1868-1874, p. 321. This genus has quite recently (I^arakester, Trctns. Linn,. Sac. viii. 1901, p. 163) been definitely referred to the Procyonidae.